/*
 * Copyright 2002-2021 the original author or authors.
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *      https://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */

package org.springframework.graphql;

import java.nio.charset.StandardCharsets;
import java.util.Arrays;

import graphql.GraphQL;
import graphql.schema.DataFetcher;

import org.springframework.core.io.ByteArrayResource;
import org.springframework.graphql.execution.DataFetcherExceptionResolver;
import org.springframework.graphql.execution.GraphQlSource;

/**
 * Utility methods for GraphQL tests.
 */
public abstract class GraphQlTestUtils {

	public static GraphQL initGraphQl(
			String schemaContent, String typeName, String fieldName, DataFetcher<?> fetcher) {

		return initGraphQlSource(schemaContent, typeName, fieldName, fetcher)
				.build()
				.graphQl();
	}

	public static GraphQL initGraphQl(
			String schemaContent, String typeName, String fieldName, DataFetcher<?> fetcher,
			DataFetcherExceptionResolver... resolvers) {

		return initGraphQlSource(schemaContent, typeName, fieldName, fetcher)
				.exceptionResolvers(Arrays.asList(resolvers))
				.build()
				.graphQl();
	}

	public static GraphQlSource.Builder initGraphQlSource(
			String schemaContent, String typeName, String fieldName, DataFetcher<?> fetcher) {

		return GraphQlSource.builder()
				.schemaResources(new ByteArrayResource(schemaContent.getBytes(StandardCharsets.UTF_8)))
				.configureRuntimeWiring(wiring -> wiring.type(typeName, (builder) -> builder.dataFetcher(fieldName, fetcher)));
	}

}
